Updating Marketplace chapter, replaced one screenshot.
LRDOCS-916 Update for Marketplace latest development pages.
LRDOCS-916 Update Marketplace homepage screenshot
Remove duplicate file with bad filename.
Updating Marketplace chapter screenshots and text to reflect changes to
liferay,.com (e.g., the removal of the App Manager and the splitting of
its functionality in the navigation menu of the user's home page).
Cleaning up wording, formatting, and spell checking Marketplace chapter.
LRDOCS-937 Correct JBoss typo
LRDOCS-923 Correct Tomcat typo
Merge pull request #847 from jhinkey/marketplace-ecommerce-partial

Marketplace Update for Dev Guide
Merge pull request #848 from rbohl/user-guide-marketplace-screenshots

User guide marketplace screenshots
Merge pull request #849 from codyhoag/jboss-typo

Correct JBoss typo
Merge pull request #850 from codyhoag/tomcat-typo

Correct Tomcat typo